1. Graduate Research Assistant, Department of Civil, Environmental, and Architectural Engineering, Campus Box 428, University of Colorado, Boulder, CO 80309-0428
2. Research Associate, Department of Civil, Environmental, and Architectural Engineering, Campus Box 428, University of Colorado, Boulder, CO 80309-0428
3. Associate Dean, for Research, College of Engineering and Applied Science, and Professor, Department of Civil, Environmental, and Architectural Engineering, Campus Box 428, University of Colorado, Boulder, CO 80309-0428